US 12,086,068 B2
Memory system and host device
Sung Woo Hyun, Gyeonggi-do (KR)
Assigned to SK hynix Inc., Gyeonggi-do (KR)
Filed by SK hynix Inc., Gyeonggi-do (KR)
Filed on Mar. 27, 2023, as Appl. No. 18/190,135.
Claims priority of application No. 10-2022-0130134 (KR), filed on Oct. 12, 2022.
Prior Publication US 2024/0126699 A1, Apr. 18, 2024
Int. Cl. G06F 12/0862 (2016.01); G06F 12/0804 (2016.01); G06F 13/42 (2006.01)
CPC G06F 12/0862 (2013.01) [G06F 12/0804 (2013.01); G06F 13/4221 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A memory system comprising:
a first memory module configured to communicate with a host through a first interface; and
a second memory module configured to communicate with the host through a second interface,
wherein the second memory module comprises:
a memory device including a plurality of pages configured to store data; and
a memory controller configured to:
update at least one of first metadata related to a space-locality and second metadata related to a time-locality based on a result of comparing numbers of pages respectively corresponding to a first trigger address and a second trigger address sequentially input from the host, and
prefetch, to the first memory module, the data determined based on the first metadata and the second metadata, and
wherein the first trigger address and the second trigger address are addresses corresponding to data for which access to the first memory module is missed.